Highlights
The decline in the major averages masked the fact that most shares were higher Friday, with megacaps generally better after bond yields declined on somewhat weaker than expected monthly US employment figures.
The Dow industrial average and the Nasdaq both declined 0.4 percent and the S&P 500 lost 0.5 percent. US Treasury yields fell, the dollar was mixed, and oil prices rose to end a very strong week.
Risk aversion hurt the major averages in the afternoon on news that a cyberattack had disrupted service at hospitals and clinics in several states. By coincidence, Fortinet, a cybersecurity firm, tanked 25 percent to lead cybersecurity stocks down after warning earlier of slowing spending on its services.
Among sectors, best were consumer discretionary, reflecting Amazon's great day; energy outperformed as oil prices extended their recent advance; plus materials. On the downside, consumer staples, information technology, and industrials lagged.